Invalid-bed



T. DOUBS.

INVALID BED.

APPLICATION rlLEn FEB.19. 1921.

Patente Nov. 15, 192L 2 SHEETS-SHEET Z.

narran stares PATENT OFFICE.

INVALID-BED.

remoti.

Specification of Letters Patent.

Patented Nov.. 15, 1921.

Application led February 19, 1921. Serial No. 446,280.

T 0 all fw wm t may concern.'

Be it known that I, THOMAS Donns, a subject of the King of GreatBritain, a resident of the town of Thessalon, Province of Untario,Dominion of Canada, have invented certain new and useful Improvements inlnvalid-l3eds, of which the following is a specification. i

rllhis invention relates to improvements in invalid beds, and theobjects of the invention are to provide a means whereby a portion of thespring mattress may be raised to bring patients to situp position andsimultaneously to provide means which will engage with the under portionof the knees and prevent the patient from slipping downwardly toward thebottom of the bed, to per; mit of the lower end or bottom and the upperor top end of bed being elevated so that the feet of the patient may bebrought into position above that of his head or the head brought into aposition above the feet with the body of the patient lying in aninclined position, to permit of the head piece and foot piece of the bedbeing folded down so as to clear the ends of the bed, in which `positionthe bed may serve as an operating table and generally to adapt the bedto better perform the functions required of them.

With the above and other objects in View, the invention consistsessentially of the improved construction and "arrangement of partsdescribed in the followingv specification and accompanying` drawings andset forth in the appended claims.

ln the drawings:

Figure 1 is a perspective view of the bed embodying my invention.

Fig. 2 is a longitudinal section of the same.

Fig. 3 is a sectional detail of the `foot of the bed. K

Fig. 4L is a detail showing the drum and the ratchet and dog connection.

Referring to the drawings; A represents a bed comprising a frame 10 inwhich the frame 11 of a spring mattress is mounted. rlhe frame 11 isprovided along its lateral walls with lugs engaging a rod 12 to which isconnected a plate 13 hingedly connected to a second plate 111 havingdepending projections 15 extending inside of the mattress frame andcarrying a transverse rod 16.

rllhe rod 16 is connected, through the link 17 provided with notches 18adapted to engage the rod 16, to an arm 19 pivotally connected to themattress frame 11 as at 19a. rlhe arm 19 is fastened to one end of anarcuate member 19b fastened to a head portion 2O connected to themattress frame by the pivot 19a. The connecting point of the arm 19 andthe arcuate member 19b is provided with a pulley 21 engaged by a wire 22which has one end fastened to the side rail of the bed. The wire 22winds around a drum `23 carried by a transversely extending shaft 211journaled on depending apertured ears 25 from the bed frame. One end ofthe shaft 2a is square in cross section so that when the upper pivotedportion 20 off the spring mattress is desired to be raised the squareend of the shaft is engaged by a crank and the same is rotated therebywinding the wire 22 around the drum 23 and drawing the arcuate member19b toward the head of the bed thereby raising the head portion 20 andthe head of the patient lying thereon. The arm 19 being drawn upon thepivotal movement of the head portion 20, toward the head of the bed,transmits the pull through the link 17 to the rod 16 with which the linkis in engagement thereby raising the apex of the plates 13 and 14; whichengage the under portion of the knees of the patient to prevent him fromslipping downwardly in the bed.

The arm, link and arcuate member together with the wire and drumattachment are provided on both sides of the spring mattress frame sothat the head portion 20 may be raised evenly.

rlhe posts 26 of the lower end of the bed are formed hollow and in thesame, hollow posts'2lY are slidably mounted. To the top of the hollowpost 27 is fastened one end of a wire 28 which extends downwardly insidethe' post 27, and throughythe lower end of the same, engages a pulley 29carried by a pin supported by arms extending from a collar 30 formedintegral with the outer post 26. The wire 28 extends from the pulicoley, upwardly to the drum 31 carried by a transversely extending rod 32journaled in the apertured ears 33 formed integral with the bed frame.The hollow post 27 lis provided with a longitudinal front slot 27ZLdesigned to afford a free passage for the pulley 29 on the ascension ofthe same when the tubular post 26 slides upwardly over the post 27.

The transverse rod 32 has one of its ends square in cross section andextending past the ear 33. Keyed to the rod 32 adjacent to the drum 31is a ratchet wheel 40 designed to coact with a spring controlled dog 41carried by an extension from the ear 33.

A wire and drum construction is provided also in the second post/26 ofthe lower end of the bed, but the pawl and ratchet is only mountedadjacent one of the drums 31.

To raise the lower end of the bed the `square end of the transverse rodis engaged by a crank and on rotating the same the wires will be woundaround the drums 31 and prevented from unwinding by the springcontrolled dog 41 being pressed into every notch of the ratchet 40. Theouter posts 26 will thus be caused to slide over the inner posts 27 andthe lower end of the bed consequently raised to the desired height.l/Vhen it is desired to bring back the bed to normal position the pawl41'is disengaged fromthe ratchet by hand pressure and the wire unwoundfrom the drums by means of the crank.

The posts 36 of the head or upper portions of the bed are of exactly thesame construction and provided with the same equipment as the posts 26of the lower end described above.

The head of the bed is worked like the lower end thereof, theconstructive parts of the one being duplicated from those of the latter.The square extremities of the transverse rods 32 and 24 are made ofuniform size so that the same crank can be used in working the same.

The head shaft 32 also carries adjacent to the drum 31 a ratchet 40 withwhich a spring controlled dog 41 is designed to coact.

When the upper end or head of the bed is desired to be raised the squareend of the shaft 32 is engaged by a crank and rotated whereby the wires28 will be wound around the drums 31 and will raise the outside posts 36of the head of the bed to the desired height. The upper end of the bedis rotated back to normal position by disengaging the pawl 41 from theratchet 40 and reversing the crank.

The* foot of the bed is formed in two sections, the top section 34 beinghingedly connected as'a-t`35 to the bottom section, and'the hollow posts27 slidably mounted within the hollow posts 26 extending a little higherthan the hinge 35 so asto engage the upper portion thereof and hold thesame rigidly in straight position in alinement with the bottom sectionof the posts.

The sections 34 canbe lowered by rotating on the hinges 35 after thelower end of the bed has been raised a little so as to clear the section34 from the overlapping posts 27.

The head of the bed is also formed in two sections 37 and 38, the uppersection 37 being hinged to the lower sections at 39. The upper sectioncan be rotated or lowered in a po sition parallel to the lower section38 by freeing it from the hollow inner posts 27.

The lower ends and the upper end or head of the bed can both be raisedand the sections 26 and 37 lowered and the bed may be used as anoperating table whenever the same is needed.

It will be obvious that this bed can be very efficiently used, enablinga person to place the patient in whatever position desired, very easilyby the manipulation of a crank engaging the squared ends of the severaltransverse rods.

As many changes could be made in the above construction and many widelydifferent embodiments of my invention within the scope of the claimsconstructed without departing from the spirit or scope thereof, it isintended that all matter contained in the accompanying specification anddrawings shall be interpreted as illustrative and not in a limitingsense.

Wha-t I claim as my invention is:

1. An invalid bed having tubular posts at the head and foot thereofapertured at the lower extremity, hollow posts telescoping within thetubular posts, flexible members connected to the hollow posts extendingthrough the said apertures and winding means carried by the bed frameand engaging the flexible members.

2. An invalid bed having tubular posts at the head and foot thereofapertured at the lower extermity, hollow posts telescoping within thetubular end posts provided with a longitudinal slot on one side thereof,a pulley carried by each tubular-post and extending within thelongitudinal slot, flexible members carried by the upper end of thehollow posts and engaging the pulleys, and winding means carried by thebed frame and engaging the flexible members. j

3. An invalid bed having tubular posts at the head and foot made of twosections, one section being hingedly connected to the other intermediateof their length, inner posts telescopically mounted within the tubularposts and extending a little higher than the lower sections of the postsin order to engage the top sections thereof.

4. An invalid bed having tubular posts at the head and foot thereofapertured at the lower extremity and formed of two seo means carried bythe bed frame and engagtioiis, one section being hingedly eoimeetecl ingthe flexible members. l0 to the other, hollow posts telesooping withinln witness whereof l have hereunto set the tubular posts and extendinghigher my hand in the presence of two witnesses.

5 than the bottom section so as to engage the THOMAS DODDS.

upper section of the posts, flexible members lVt-nesses: connected tothe hollow posts extending F. E. WILLIAMS,

through the said apertures and winding RUBY MGKENZIE.

